Americans choose between Clinton and Trump after bitter campaign

By Steve Holland NEW YORK (Reuters) - After a long and exceptionally negative campaign, Americans by the millions voted on Tuesday for their next president as opinion polls showed Democrat Hillary Clinton with a narrow lead over Republican Donald Trump. In a battle that focused on the character of the candidates, Clinton, 69, a former U.S. first lady, senator and secretary of state, and Trump, 70, a New York businessman, made final, fervent appeals to voters late on Monday to turn out at the pol